Does nitrofur mac have sulfa in it?

No, nitrofurantoin (often referred to as "nitrofur mac") does not contain sulfa. It is an antibiotic specifically used to treat urinary tract infections and belongs to a different class of medications. Patients with sulfa Allergies can typically take nitrofurantoin without concern for sulfa-related reactions. However, it is always best to consult a healthcare provider regarding any medication allergies.